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BUSINESS DESCRIPTION (Narrative) (Details) - USD ($) | 3 Months Ended | 6 Months Ended | 39 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | --- | ---
Jun. 30, 2024 | Jun. 30, 2023 | Jun. 30, 2024 | Jun. 30, 2023 | Jun. 30, 2024 | Apr. 08, 2024 | Dec. 31, 2023 | Apr. 14, 2023 | Apr. 13, 2020
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Net loss | $ 3,300,000 |  | $ 3,300,000 |  | $ 3,300,000 |  |  |  |
Net cash used in operating activities |  |  | (167,000) | $ (2,777,000) |  |  |  |  |
Accumulated deficit | (101,449,000) |  | (101,449,000) |  | (101,449,000) |  | $ (98,150,000) |  |
Working capital | 1,200,000 |  | 1,200,000 |  | 1,200,000 |  |  |  |
Aggregate authorized offering price |  |  |  |  |  | $ 1,061,478,000 |  |  |
Proceeds from issuance of common stock |  |  | 78,000 | $ 2,245,000 |  |  |  |  |
Amount available for future sale of shares pursuant to the sales agreement | 1,000,000.0 |  | 1,000,000.0 |  | 1,000,000.0 |  |  |  |
AGP 2023 Sales Agreement |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Aggregate authorized offering price |  |  |  |  |  | 1,061,478 |  | $ 5,800,000 |
Proceeds from issuance of common stock | $ 11,000 |  | $ 100,000 |  |  |  |  |  |
Shares issued (in shares) | 1,655 | 25 | 11,822 | 25 |  |  |  |  |
Amount available for future sale of shares pursuant to the sales agreement | $ 3,700,000 |  | $ 3,700,000 |  | 3,700,000 | $ 1,000,000.0 |  |  |
At The Market Offering Agreement | AGP |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Aggregate authorized offering price |  |  |  |  |  |  |  |  | $ 50,000,000.0
Proceeds from issuance of common stock |  | $ 100,000 |  | $ 500,000 | $ 15,600,000 |  |  |  |
Shares issued (in shares) |  | 3,636 |  | 30,827 | 260,128 |  |  |  |
Payments of stock issuance costs |  |  |  |  | $ 500,000 |  |  |  |
Maximum | AGP 2023 Sales Agreement |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Aggregate authorized offering price |  |  |  |  |  |  |  | $ 5,800,000 |
Proceeds from issuance of common stock |  | $ 1,000 |  | $ 1,000 |  |  |  |  |

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